I've been looking around online for a while and haven't been able to find a solution available with the resources at my disposal. Here's the scenario:
I have an online training site I manage and do development for. We've been offering surveys to get feedback at the time that a learner takes an activity. It's been asked if we could offer a followup survey to them after a period of time, like 3 months. I've been looking to see if I could write an application that with trigger a script to send an email reminder to a learner three months after they came to our site and completed an activity. I could write a script whereby I monitor who has or who hasn't come back for their followup, when it is due, and have it send an email when it is time fairly easily, but if I could have this running in the background without my having to actively trigger these actions, it would make my job running this site a bit easier.